Email Speech in osX

I read somewhere that OS X is capable of reading email aloud; I went to my Speech prefs, turned it on, but I don't see any options either there or in mail prefs for this feature. Any help is appreciated.

yep they got it at barnes n noble. i look at it there and read the part on hacking the dock and some other sections. i forgot about the email speech part...meaning i forgot it was there. i remeber it now. well i guess im going to have to go look at it again.

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